Device for adjusting the feed mechanism of shingle-machines.



A ENOS EVANS; OF.:1EDM0NDS, WASHYINGTON.

nnxrren ron AD-JUSTIN@ ,THE FEEDQMECHANISM. .onisHINGLE-MACHINES. l

To aZZ- whom it may concern: Y

Be it known that I, Enos EvANs,.a-'citizen' ofthe United States, residingatEdmonds,

in the county of "Snohomishfland'State ofv tVVashington, have invented new and" useful Improvements-in Devices' for Adjusting" the I Feed Mechanism of ShingleMachines--of whichv the following is a specification.

This invention relates 'to improvements` in devices'for adjusting'the feedfmechanismj of shingle machines andthe object'of'theimprovement is to provide an adjustingvdevice for the feed mechanism of a'shinglemachine that is strong and simple inconstruction, positive in its action,J ione that` may quickly and easily be'l installed; onfupright shingle machines of 'a well knowntype and that 'may be loperated without vstopping the v machine tovarythe-thick'ness of `the shingles cut by such machine. l

The invention consists in-th'e novel combination and adaptation of parts of anfadj'usting device as will be more clearly described in the following specification, illustrated in the accompanying drawings and finally pointed out in the appended claims.

Y Referring to the drawings, VVF igure 1 is a view in perspective of thefeedmechanism of a shingle machine of a well knownltype upon `which my adjiusting'device 'hasxbeen installed;y Fig. 2 is a view of'the 'same 'on shingle.

broken line 2, 2 of Fig. 1, showing parts of the feed mechanism in elevation' and fFig. 3, 1s an enlarged sectional vlewonbroken `line 3, 3 of Fig. 2.

In `upright shingle machines "of the type herein illustrated it has heretofore' been customary'to vary the thickness of `lthe Vshingles by performing two separate adjustments, one for the -butt and lone for the tip ofthe Thismakes itnecessary toy stop the machiner and often 'results in an'uneven adjustment of the two ends,

It is the purpose ofthe present `invention to provide-means for performing these two Vadjustments simultaneously without stop-A ping the machine and to insurefthat theresulting variation in thickness of. the tips and butts of the shingles due to the adjustment will be the same. Y

` For the purpose of this'application, the invention is shown as associated with' an upright shingle machine of a well known type and in order to explain more clearly the operation of the invention, the construction v Specification ofLe-tters Patent. v

IApplipationmedApril26,1915;:serialNofmaile.

Patented lanftflgl.

andwoperation ofthis type/of'shingle machine will first lb'e-explained briefly.'-

Re'ferring to lthe drawings 'throughout which like'refere'nce numerals-indicate like parts the numeral 5 :indicates a vertically disposed frame element of an" upright shingle machine and 6 and 7 are upperfand lower. horizontal' frame members respectively, to1which aref-secured wedge shaped track fbarsS and'. 95th'at serve as guides for i alongitudinally reciprocating fcarri'age consisting in-.upright members =1`0 and horizontal shingle'block-holding bars 11 and y12. Theblock-holding bars 11-and 12 1are: providedlwith longitudinally extending -fshafts 13 rand 114 upon which l.are #secured a plurality of rolls 15 and 1G having *spur teeth and adaptedtogrip the upperfand 'lower faces of-a shinglefblock, the block-holding bar 11 being adapted by suitable means to be liftedA slightly to permit shingle blocks to be inserted between the rolls 15 and A16.: The

outer'ends of the shafts 13 and 14 are provided with yfixedlyysecured ratchets 17 and 18'V that are connectedby links20v and 21 with the ends of bell cranks 22 and 23fwhich are fulerumed on ypins 24:1and 25 in the upright members 10 and are provided on their opposite `ends lwith rollers 26 and v27 that engage with cams -28 and 30 on the frame relement 5 andare lifted thereby to turn thetheJshingle block'to obviate waste of lumber.

The ratchets 17 4and 18 are preferablyfof the friction type and are'so constructed that they admit of no lost motion whatever in one direction th'us making it posslblel by `regulatingthe throw ofthe bell cranks 22 and'23 tosecure any desired amount of turningof the rolls 15 and 16 andV any desiredl thickness Vof shingle. After the bell crank levers 22 and 23 have been oscillated about the pivots 24 and 25 to feed the shingle blocks forward such levers are automatically returned to their initial position by springs 32and 33 and it is the location of this initial position that regulates the throw of the ratchets 17 and 18 and the advance of the rolls 15 and 16.

For the purpose of regulating the return movement of the bell crank levers 22 and 23 and the consequent advance movement of the shingle block on each reciprocation of the carriage I have provided a screw shaft 34 that extends downwardly through holes in two outwardly projecting plates 35 and 36, formed integral or otherwise rigidly lconnected with the upright carriage members 10 and is provided with arms or brackets 37 and 38 that are screwed thereon and provided at their outer ends with set screws 40 and 41 adapted to project upwardly through holes 42 and 43 in the plates 35 and 36 to forni stops for the bell crank levers 22 and 23. The set screws 40 and 41 are screwed through the arms 37 and 38 and are secured against turning by am nuts 44 and 45. The top end of the screw shaft 34 is provided with a hand wheel 46 by which it may be turned and such shaft is supported vertically by a collar 47 that is fiXedly secured thereto and is adapted to rest on the plate 35.

48 is a fork that straddles the collar 47 and has a shank 50 that projects within a hole 51 in the member 10 and is provided with a compression spring 52 that exerts a pressure on the fork 48 and causes it to frictionally engage with the collar 47 to prevent turning of the shaft 34 due to the jar of the machine and at the same time to permit such shaft to be turned bythe hand wheel 46.

T he operation of the invention may be describedl as follows: When the machine is in operation and it is desired to cut a shingle of greater thickness the screw shaft 34 may be turned in one direction to cause the arms 37 and 38 to be screwed downwardly thereon and permit a greater amount of oscillation of the bell crank levers 22 and 23 thus increasing the length of stroke of the links20 and 21 and consequently increasing the amount of turning of the rolls 15 and 16 and the amount of forward movement of the shingle block. If it is desired to reduce the thickness of the shingles the shaft 34 is turned in an opposite direction to lift the arms 37 and 38 and reduce the amount of oscillation of the bell crank levers 22 and 23 and consequently reducing the amount of outward movement imparted to the shingle block on each reciprocation of the carriage.

The plates 35 and 36 are usually provided on shingle machines of the class illustrated in the accompanying drawings and it is only necessary when this invention is installed on such machines to drill holes for the shaft 34 and to drill or enlarge existing holes for the set screws 40 and 41 and the shank 50 of the fork 48.

Obviously my adjusting device may be applied to various types of machines other than the one herein shown and described.

What I claim and desire to protect by Letters Patent, is:-

1. A device of the class described comprising lever arms, a threaded shaft, supports for said shaft, arms adapted to screw onto said shaft and stud pins disposed to project upwardly from said arms to engage with said lever arms to limit the downward movement thereof.

2. A device of the class described comprising a shingle machine that is provided with bell crank levers, a threaded shaft disposed in brackets on said shingle machine, arms adapted to screw onto said threaded shaft and having stud pins disposed to project upwardly through said brackets to limit the movement of said bell crank levers, said arms being adapted to be moved vertically by rotation of said shaft, a collar provided on said shaft and adapted to engage with one of said brackets to support said shaft and a spring pressed friction member to engage with said collar to resist turning of said shaft.

3. A device of the class described comprising a shingle machine that is provided with bell crank levers, a. threaded shaft secured in brackets on said shingle machine, arms screwed onto said shaft, and set screws adapted to project upwardly from said arms and to engage with said bell crank levers to limit the movement thereof said set screws being adapted to be moved vertically by rotation of said threaded shaft.

4. A device of the class described comprising elements adapted for limited movement, and devices for varying the limit of movement of said elements said devices consisting in a threaded shaft that is supported in brackets, arms screwed on said brackets and adapted to be moved vertically by rotation of said threaded shaft and means associated with said arms and engaging with said movable elements whereby the limit of movement of all said elements may be changed simultaneously.

ENOS EVANS.

Witnesses:

G. A. WASSER, E. B. HERALD.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

